Justin Timberlake is playing a game of musical hotties, and it's Scarlett Johansson who's once again landing -- and grinding -- in his lap.

The pop crooner had reportedly moved on from Scarlett (who was just named number two in AskMen.com's 99 Most Desirable Women of 2007), and onto Jessica Biel (#5 in the same list). But down in Miami for the Super Bowl, says In Touch, it was JT and Johansson spending "the whole weekend together," and meeting up for a 3:00 AM "nightcap" at his Delano Hotel bungalow on Saturday.

The pair were also seen at the Hennessy postgame after-party at Mokai, "dancing and whispering in each other's ears." Page Six adds that as they were leaving, Justin was standing against a wall, and got a suggestive grinding from ScarJo.